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Close-up of an LCD, showing a dead green subpixel as a black rectangle. A defective pixel or a dead pixel is a pixel on a liquid crystal display (LCD) that is not functioning properly. The ISO standard ISO 13406-2 distinguishes between three different types of defective pixels, [1] while hardware companies tend to have further distinguishing ...
The screen-door effect (SDE) is a visual artifact of displays, where the fine lines separating pixels (or subpixels) become visible in the displayed image. This can be seen in digital projector images and regular displays under magnification or at close range, but the increases in display resolutions have made this much less significant.
Other examples: Apple's iPhone X and Samsung's Galaxy series both mitigate or delay the onset of burn-in by shifting the pixels every minute or so for the battery, Wi-Fi, location, and service bars. Also, parallax scrolling may be enabled for the home screen to give icons a 3D-like effect, a setting Apple refers to as "perspective zoom".
Mobile phones with WVGA native display resolution have become common. This is a list of phones that have such displays. Wide VGA or WVGA an abbreviation for Wide Video Graphics Array is any display resolution with the same 480 pixel height as VGA but wider than 640 pixels, such as 800 × 480, 848 × 480, or 854 × 480.
The displays are manufactured worldwide by different suppliers. Currently, the iPad's display comes from Samsung, [12] while the MacBook Pro and iPod Touch displays are made by LG Display [13] and Japan Display Inc. [14] There was a shift of display technology from twisted nematic (TN) liquid-crystal displays (LCDs) to in-plane switching (IPS) LCDs starting with the iPhone 4 models in June 2010.
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The Pixel 2 XL's display suffers from a "black smear" problem, which occurs when a group of black pixels transition to colored ones, and tend to linger for a while, before changing to their expected state. [52] [53] The Pixel 2 XL has an issue where the screen may flash randomly. It occurs when the phone is locked or unlocked. [54]